Colnect-135-963-Carl-Auer-von-Welsbach-1858-1929-gas-mantle-light.jpg
Source: Colnect
Issued by: Austria
Function: semipostal
Date: 12/6/1936
Denom: 40+40g
Color: blue black
Design type: Austrian inventors
Design: Carl Auer von Welsbach
Watermark: unwmk
Perf: 12.5
Catalog value:



External links:
Colnect 17134-..ight-Inventors


Record of changes